liggett



t w. K. LIGGETT. COMBINED CRUSHER AND PULVERIZER. I APPLICATION FH ED APR- Il. l9l4- 1,321,380. Patented Nov. 11,1919.-

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ATTORNEY.

W. K. LIGGETT. COMBINED CRUSHER AND PULVERIZER.

APPLICATION FILED APR-11.1914.

Patented Nov. 11, 1919.

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WITNESSES: my

WILLIAM K.

LIGGETT, OF COLUMBUS, OHIO, ASSIGN'OR TO THE JEFFREY MANUFACTUR- ING COMFANY, 0F COLUMBUS, OHIO, A CORPORATION OF OHIO.

COMBINED CRUSHER AND PULVERIZER.

To all whom" it may concern:

Be it known that I, WILLIAM K. LIGGETT, a citizen of the United States, residing at Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Combined Crushers and Pulverizers, of which the following is a specification, therein to the accompanying drawing.

This invention relates to improvements in portable pulverizing and crushing apparatus, particularly mechanisms that can be employed by farmers for either of various purposes, such as pulverizing masses of material which do not require preliminary breakage or crushing, and also reducing hard rock pieces to smaller ones, and, at option,

producing from such rock pieces, a pulverulent mass.

Prior to my invention heavy cumbersome crushing machines have been provided, some mounted on wheels, and others designed to be fastened stationarily in position. They have been made heavy and cumbersome because of their being designed for severe work requiring the application of great power.

The ob ect of the present invention mm 5 provide a strong but light and readily portable mechanism comprising a pulverizer whose operating elements perform their work at high speed. In order to be readily portable from place to place about a farm or over uneven surfaces of ground the machine is made' compact, but has its working parts so distributed that the strains and stresses are taken up by the more firmly supported frame elements, so that the interior parts can be readily reached for repairing or replacing Without disassembling the entire mechanism.

My improved reduclng apparatus is shown in the accompanying drawings, in which:

Figure 1 is a vertical longitudinal section of the machine;

Fig. 2 is a general plan'view of the machine shown in Fig. 1; Fig. 3 is a vertical transverse section along the center line of the pulverizing shaft;

Fig. 4-. is a side elevation of the machine, certain parts being broken away;

Fig. 5 is a fragmentary sectional view along the line 5-5 of Fig. 1.

Like numerals refer to similar parts in the several figures.

Referring to the drawings, the main frame Specification of Letters Patent.

reference being had Patented Nov. 11, 1919.

Application filed April 11, 1914. Serial No. 831,200.

of the Vehicle comprises the framework of the pulverizing and crushing apparatus. The pulverizer has two side plates land 2 ]01ned by the cross members 3 and 4: bolted thereto. The vehicle-has rear wheels 79 on the ends of an axle 78. It also has a front truck having the wheels 83 on the swiveling axle 82 to which is connected the pole 84:. The said frame bars or plates of the pulverizer are'bolted directly to the rear axlei 78, and extend forward to transverse lines as near as practicable to the front supporting and steering wheels 83.

The framework between the two a: les (mainly consisting of the pulverizer frame as set forth) is connected to the front axle by short sill bars 80, the rear ends of which are bolted to the front lower corners of the pulverizer plates 1, 2. These bars converge toward a pivot axis and are secured 75 ent mechanism.

The end frame plates 1 and 2 are cast with large central apertures and with outwardly extending flanges 20. The rotor consists of the shaft 27 ,with the key 32, thehammers 36, theend disks 34, with hubs 33, the intermediate disks 30, the spacers 31, the pivot rods 35, the clamping nuts 29, the power receiving pulley 37 and the power transmitting pulley 49.' These parts. are so constructed and relatively positioned that they can be assembled and the assembly, as an entirety, can be passed through the large central aperture in the frame plate 2 and across the pulverizer chamber;

At the ends of the shaft are the bearing plates or housing disks 2land 22. They are secured to the flanges 20 and are shaped in such way as to turninward a short distance. In each of these'bearing or housing 7 plates there are rings 23 and 26, with bearin balls between them. hen putting the rotor in position the bearing plate 21 can be allowed to remain, the bolts for plate 22 being taken out, as are also those at 25, for the binding and closing plates 2%. Nuts 29 hold in place the inner ball ring. The end disks 3% are of a diameter such that they can pass through the openings in the end frame. The hanimers, although shown radially extended, can be folded toward the shaft when not rotating so as to lie within the circle of the hammer disks 3f. The shaft is shouldered at 28 to take the end thrust of the inner ball ring. The thrust of the outer ball rings is taken by the iii-turned flanges on the beaning or housing plates 21, 22.

This part of the apparatus includes also the screen bars or grating 39 supported in the ring segments 38.

The front part of the pulverizing housing consists of a plate t0 which extends up to approximately the horizontal plane of the rotor. The cover consists of the sheet or curved plate 42 which is secured to the lower vertical wall 40 by the flanges at 41. Inside of the cover are placed angularly arranged breaker plates 43, 4A, and 45 with the intermediate plates 46, 47, and 19.

I do not herein claim specifically any of the detailed features of improvement in the pulvcrizer mechanism just described, separately considered. But having found that any rapidly rotating pulverizers of earlier styles known to inc-were not suitable for the mechanism (as an entirety) that T have herein shown, 1 was led to design this part of the apparatus with special relation to the others which are set forth.

The power for driving the apparatus is initially taken to the rotor shaft 32. From that, although rotating at high speed, it is transmitted to t e preliminary crushing apparatus. The latter is also supported on the main frame elements 1 and 2 of the vehicle and of the pulverizer which, at their rear parts, are extended upward to relatively high lines. And the strong cross bracing frame plate 4; is bolted to these upwardly extending projections. To the rear face of this frame clement ":l: is secured a stationary crushing jaw 8, with ribs 18. In the rear, and on the shaft 5, is hinged the reciprocating plate 6 with jaw 7, having ribs 17. This jaw is reciprocated by the shaft 11 in bearings 12 and provided with an eccentric 10, which bears against the roller at 9 carried by the swinging jaw. These parts, to wit, the shaft 11, the roller 9, and the shaft 5, are all mounted directly above the rear axle, so that the strains and stresses exerted when at work are taken by the most firmly supported part of the mechanism. The swinging jaw is returned outward and held with its roller against the eccentric 10 by means of a spring 16 on a rod 14 pivoted at 15 to the jaw, the tension of the spring being maintained and regulated by nuts at ll. The shaft 11, for driving the crusher jaw, is actuated directly from the pulverizcr shaft 32 by means of the belt 50 driven from the small pulley A.) and engaging with the large fly wheel 13 on shaft. 11. The

belt 50 is kept tight by the lever 52 pivoted on bracket 51, and carrying the pulley 54: and the weight 53.

A feeding and inclosing device is provided having the rear upwardly curved shield 85. the side plates 86 and the hopper 86, the latter being situated directly above the chamber between the crusher jaws.

This chamber delivers material from the crusher to an inclined chute 19, which in turn delivers it to the hammers of the pulverizer. But there are many materials which, upon farms, it is desirable to reduce or comminute whichdo not require a crushing like that performed by the jaws at 7, 8, such as different forms of stock feed and materials to be delivered to the ground as fertilizers, or the like, such as straw, stalks, leaves, etc. Such materials as do not require crushing, but should be finely cut up or pulverized, can be delivered directly to the pulverizer chamber and successfully treated, the belt at 50 at such times being removed and the crusher jaws merely acting as the walls of the chuteway.

Supported on the pulverizer frame and below it there is a cross conveyer (30 mounted in a trough or box Its shaft is indi cated by 62, which is mounted in bearings, 63, 68. This shaft is rotated by wheel 6st and the chain 65 driven by sprocket 66 on the crusher shaft 11. It delivers to the boot 73 of an elevator having buckets Tl. mounted in an elevator tube 61. The shaft 62 of the cross conveyer carries a sprocket wheel 67 in a'bearing 68,v the chain 69 from the lower sprocket passing, at the top, around a sprocket 70 on shaft 71 mounted in adjustable bearings 72. The elevated material is delivered from the buckets through a discharge orifice at 75.

The elevator structure is disposed in such manner as to incline forward slightly in order to have it assist in holding steady and balancing the apparatus as an entirety and notwithstanding the Violent movements to which it is subjected by the rapid rotations of the pulverizer and the reciprocation of the crusher.

It is rigidly held in predetermined position -by means of the bracket bar 77 which is bolted to the upper part of the framework of the crusher and the stay rod 76 which engages with the holder or brace 77 and is secured to the front end of the pulverizer frame, as shown.

The rapidly revolving rotor shaft and the jaw actuating shaft are close together, and, although driven by a short belt connection, it frictionally engages with the pulleys and the drive connection is of a yielding character, so that notwithstanding the varia tions in loads upon the two main elements .of the mechanism, one will not interfere with the support of said rapidly revolving rotor,

of the axle carrying the rear wheels and secured directly to the pulverizer frame parts, the front wheeled truck, the short sill bars bolted to the pulverizer frame plates and hinged to the truck, the jaw crusher having a hinged reciprocating jaw mounted in planes above those of the pulverizer, the driving shaft for the reciprocating jaw, said shaft and the hinge of said jaw being both positioned directly above the rear axle, the cross eonveyer supported on the pulverizer frame below the pulverizer and arranged to take the material therefrom on transverse lines, and the elevator receiving material from the cross eonveyer and inclined upward and forward, all of said parts being arranged as set forth to provide a short wheelbase, with the operative parts immediately above the ground supports.

2. In a portable reducing apparatus, the combination with the pulverizer having in its interior a rapidly revolving rotor comprising a shaft with swinging hammer bars and disks for the bars, a framework with end plates 1, 2 for the support of said rapidly revolving rotor and formed with enlarged central openings adapted to have the rotor with its attachments passed endwise transversely therethrough for mounting and dismounting the rotor, of the axle carrying the rear wheels and supporting the pulverizer frame parts, the front wheeled truck, the sill bars secured to the pulverizer frame .plates and hinged to the. truck, the jaw crusher having a hinged reciprocating aw in planes above those of the pulverizer, the driving shaft for the reciprocating jaw, the prime power receiving device on the rotor shaft, and' the power transmitting devices between the rotor shaft and the jaw actuating shaft, substantially as described.

3. In a portable reducing apparatus, the combination with the pulverizer having in its interior a rapidly-"revolving rotor comprising a shaft with swinging hammer bars, and a framework with end plates 1, 2 for the support of said rapidly revolving rotor, of the axle carrying the rear wheels and arranged to support the pulverizer, the front wheeled truck, said truck and rear axle be-' ing arranged to provide a short wheel base, the jaw crusher having a hinged reciprocating aw in planes above those of the pulverizer, the driving shaft for the reciprocating jaw, said shaft and the hinge of said jaw being both positioned directly above the rear axle, the, prime power receiver on the rapidly revolving rotor shaft,

the driving pulley on the rotor shaft, the

driven pulley on the reciprocating jaw shaft, and the relatively short belt frictionally en gaging the said pulleys for transmitting power from the rapidly revolving rotor shaft to the jaw shaft, substantially as described. I

In testimony whereof, I afiix my signature in presence of two witnesses.

'WILLIAM K. LIGGETT.

\Vitnesses T. E. MIILER, DUDLEY T. FISHER. 

